11912872 has 8 divisors (see below), whose sum is σ = 22336650. Its totient is φ = 5956432.

The previous prime is 11912851. The next prime is 11912891. The reversal of 11912872 is 27821911.

11912872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9821956 + 2090916 = 3134^2 + 1446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744547 + ... + 744562.

Almost surely, 2^11912872 is an apocalyptic number.

It is an amenable number.

11912872 is a deficient number, since it is larger than the sum of its proper divisors (10423778).

11912872 is a wasteful number, since it uses less digits than its factorization.

11912872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489115 (or 1489111 counting only the distinct ones).

The product of its digits is 2016, while the sum is 31.

The square root of 11912872 is about 3451.5028610737. The cubic root of 11912872 is about 228.3874094783.

The spelling of 11912872 in words is "eleven million, nine hundred twelve thousand, eight hundred seventy-two".